<template>
  <el-container class="main-container">
    <!-- 头部区域 -->
    <el-header>
      <!-- 左侧的 logo -->
      <img src="../../assets/images/logo.png" alt="" />
      <!-- 右侧的菜单 -->
      <el-menu
        class="el-menu-top"
        mode="horizontal"
        background-color="#23262E"
        text-color="#fff"
        active-text-color="#409EFF"
      >
        <el-submenu index="1">
          <template slot="title">
            <!-- 头像 -->
           <img  class="avatar" v-if="userinfo.user_pic" :src="userinfo.user_pic" alt="" />
            <img v-else :src="pic" alt="" class="avatar" />
            <span>个人中心</span>
          </template>
          <el-menu-item index="1-1"><i class="el-icon-s-operation"></i>基本资料</el-menu-item>
          <el-menu-item index="1-2"><i class="el-icon-camera"></i>更换头像</el-menu-item>
          <el-menu-item index="1-3"><i class="el-icon-key"></i>重置密码</el-menu-item>
        </el-submenu>
        <el-menu-item @click="logout" index="2"><i class="el-icon-switch-button"></i>退出</el-menu-item>
      </el-menu>
    </el-header>
    <el-container>
      <!-- 侧边栏区域 -->
     <!-- 左侧边栏区域 -->
    <el-aside width="200px">
       <div class="user-box">
           <img v-if="userinfo.user_pic" :src="userinfo.user_pic" alt="" />
           <img v-else src="../../assets/logo.png" alt="" />
          <span>欢迎 {{ userinfo.username && userinfo.nickname}}</span>
       </div>
        <!-- 侧边栏区域 -->
       <el-menu
         :default-active="$router.path"
         class="el-menu-vertical-demo"
         background-color="#23262E"
         text-color="#fff"
         active-text-color="#409EFF"
         unique-opened
         router
        >
          <!-- 不包含子菜单的“一级菜单” -->
         <template v-for="(item,index) in menus">
        <!-- 不包含子菜单的“一级菜单” -->
       <el-menu-item :index="item.indexPath" v-if="!item.children" :key="item.indexPath">
         <i :class="item.icon"></i>{{item.title}}</el-menu-item>
       <!-- 包含子菜单的“一级菜单” -->
       <!-- 文章管理 -->
       <el-submenu :index="item.indexPath" :key="index" v-else>
         <template slot="title">
           <i :class="item.icon"></i>
           <span>{{item.title}}</span>
         </template>
         <el-menu-item v-for="menu in item.children" :key="menu.indexPath" :index="menu.indexPath">
           <i :class="menu.icon"></i>{{menu.title}}</el-menu-item>
      </el-submenu>
       </template>
          </el-menu>
       </el-aside>

        <el-container>
        <!-- 页面主体区域 -->
        <el-main>
         <router-view></router-view>
        </el-main>
        <!-- 底部 footer 区域 -->
        <el-footer>© www.itheima.com - 黑马程序员</el-footer>
      </el-container>
    </el-container>
  </el-container>
</template>

<script>
import { mapActions, mapState } from 'vuex'
import pic from '../../assets/images/logo.png'
export default {
  data () {
    return {
      pic,
      menus: []
    }
  },
  name: 'Main',
  methods: {
    // 获取到用户信息需要函数触发
    ...mapActions(['userInfoToken']),
    // 退出登录页
    logout () {
      this.$confirm('是否退出', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(() => {
        this.$message.info('确定')
        // 清空token的值
        this.$store.commit('updataToken', '')
        // 并且返回到登录页面
        this.$router.push('/login')
      }).catch(() => {
        this.$message.info('取消')
      })
    },
    // 获取侧边栏数据
    async initMenus () {
      const res = await this.$http.get('/my/menus', {
        // 设置请求头
        headers: {
          Authorization: this.$store.state.token
        }
      })
      // 判断
      // console.log(res.data.data)
      if (res.data.code === 0) {
        this.menus = res.data.data
        // console.log(this.menus)
      }
    }
  },
  // 获得到数据 state里面的数据
  computed: {
    ...mapState(['userinfo', 'token'])
  },
  // 初始化数据
  created () {
    if (this.token) {
      this.userInfoToken()
      this.initMenus()
    } else {
      this.$router.push('/login')
    }
  }
}
</script>

<style lang="less" scoped>
.main-container {
  height: 100%;
  .el-header,
  .el-aside {
    background-color: #23262e;
  }
  .el-header {
    padding: 0;
    display: flex;
    justify-content: space-between;
  }
  .el-main {
    overflow-y: scroll;
    height: 0;
    background-color: #F2F2F2;
  }
  .el-footer {
    background-color: #eee;
    font-size: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
  }

// 侧边栏菜单的样式
 .el-aside {
  .el-submenu,
  .el-menu-item {
    width: 200px;
    user-select: none;
  }
}
}
// 左侧边栏用户信息区域
.user-box {
  height: 70px;
  display: flex;
  justify-content: center;
  align-items: center;
  border-top: 1px solid #000;
  border-bottom: 1px solid #000;
  user-select: none;
  img {
    width: 35px;
    height: 35px;
    border-radius: 50%;
    background-color: #fff;
    margin-right: 15px;
    object-fit: cover;
  }
  span {
    color: white;
    font-size: 12px;
  }
}

.avatar {
  border-radius: 50%;
  width: 35px;
  height: 35px;
  background-color: #fff;
  margin-right: 10px;
  object-fit: cover;
}

</style>
